779794660 has 12 divisors (see below), whose sum is σ = 1637568828. Its totient is φ = 311917856.

The previous prime is 779794619. The next prime is 779794663. The reversal of 779794660 is 66497977.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 352463076 + 427331584 = 18774^2 + 20672^2 .

It is not an unprimeable number, because it can be changed into a prime (779794663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19494847 + ... + 19494886.

It is an arithmetic number, because the mean of its divisors is an integer number (136464069).

Almost surely, 2^779794660 is an apocalyptic number.

It is an amenable number.

779794660 is an abundant number, since it is smaller than the sum of its proper divisors (857774168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

779794660 is a wasteful number, since it uses less digits than its factorization.

779794660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38989742 (or 38989740 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 55.

The square root of 779794660 is about 27924.8036698559. The cubic root of 779794660 is about 920.4356238804.

The spelling of 779794660 in words is "seven hundred seventy-nine million, seven hundred ninety-four thousand, six hundred sixty".